[RFC net 1/1] net: stmmac: skip PHY scanning when PHY already attached in DT mode

[Michael Sit Wei Hong]

If PHY is successfully attached during phylink_fwnode_phy_connect()
in DT mode. MAC should not need to scan for PHY again.

Adding a logic to check if ovr_an_inband is set before scanning for
a PHY, since phylink_fwnode_phy_connect() returns 0 when

	phy_fwnode = fwnode_get_phy_node(fwnode);
	if (IS_ERR(phy_fwnode)) {
		if (pl->cfg_link_an_mode == MLO_AN_PHY)
			return -ENODEV;
		return 0;
	}

Fixes: fe2cfbc96803 ("net: stmmac: check if MAC needs to attach to a PHY")
Signed-off-by: Michael Sit Wei Hong <michael.wei.hong.sit at intel.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index d41a5f92aee7..4b8d3d975678 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1149,7 +1149,7 @@ static int stmmac_init_phy(struct net_device *dev)
 	/* Some DT bindings do not set-up the PHY handle. Let's try to
 	 * manually parse it
 	 */
-	if (!fwnode || phy_needed || ret) {
+	if (!fwnode || (phy_needed && priv->phylink_config.ovr_an_inband) || ret) {
 		int addr = priv->plat->phy_addr;
 		struct phy_device *phydev;
 
-- 
2.34.1